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Table 2 HISTORIC GROUNDWATER LEVELS AND CHEMICAL ANALYSIS RESULTS August 2003 Through February 2004 Former BP Oil 11192 Date TOC Depth to LPH Ground- Change in TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Samples! Elevation Water Thickness water Elevation 8260B benzene Xylenes 8021 B 8260B Elevation (feet) (feet) (feet) (feet) (feet) (µg/1) (µg/1) (µg/1) (µg/1) (µg/1) (µg11) (µg11) (µg/1) MW-1 8/14103 500 15 31 0 00 -1031 -- ND<250 ND<2 5 ND<2 5 ND<2 5 ND<5 0 ND<10 11/26/03 500 16 18 000 -11 18 -087 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<2 0 2123104 5 00 1483 000 -9 83 135 ND<100 ND<1 0 ND<1 0 ND<l 0 ND<2 0 ND<4 0 MW-3 8114/03 S68 16 04 000 -1036 -- NDa0000 ND<100 ND<100 ND<100 ND<200 ND<400 11/26/03 568 1696 000 -1128 -092 ND<10000 ND<100 ND<100 ND<100 ND<200 ND<400 2123104 568 15 60 000 -9 92 1 36 ND<10000 ND<100 ND<100 ND<100 ND<200 ND<400 MW-4 8114/03 621 1651 000 -1030 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 42 11/26/03 621 1837 000 -1216 -186 130 ND<0 50 070 ND<0 50 ND<1 0 71 2123/04 6 21 15 87 0 00 -966 250 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 20 MW-5 8/14/03 563 15 81 000 -10 18 -- 61 ND<0 50 ND<0 50 ND<0 50 ND<l 0 23 11/26/03 5 63 1671 000 -1108 -090 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 69 2/23/04 563 15 35 0 00 -9 72 136 ND<50 ND<0 50 068 ND<0 50 1 7 4 0 MW-6 8/14103 5 28 1543 000 -1015 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<2 0 11/26/03 5 28 1629 000 -1101 -086 50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 7 3 2/23/04 5 28 1481 000 -953 148 ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 3 1 MW-7 8/14/03 5 69 1607 000 -1038 -- ND<10000 ND<100 ND<100 ND<100 ND<200 ND<400 11/26/03 569 1697 000 -1128 -090 ND<20000 ND<200 ND<200 ND<200 ND<400 ND<800 2/23/04 569 1563 000 -994 134 ND<i0000 ND<100 ND<100 ND<100 ND<200 ND<400 MW-8 8/14/03 4 79 1496 000 -10 17 -- ND<50 ND<0 50 ND<0 50 ND<0 50 ND<1 0 ND<2 0 11192 Page 1 of 2